/Engine/Source/Runtime/MovieScene/Public/IMovieScenePlayer.h
Will only call IMovieSceneExecutionToken::CacheExistingState if no state has been previously cached for the specified token type
void SavePreAnimatedState ( [FMovieSceneAnimTypeID](API\Runtime\MovieScene\Evaluation\FMovieSceneAnimTypeID) InTokenType, const [IMovieScenePreAnimatedGlobalTokenProducer](API\Runtime\MovieScene\IMovieScenePreAnimatedGlobalToke-_1) & InProducer )